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YunXin
The GCF of 20, 28, and 44 is 4
4 because 20,28, and 44 all can be divided bye 2 which comes out to be 10, 14 , and 22 they can also be divided by 2 which is 5,7, and 11 then your tow numbers that u divided was 2 and 2 so u multiply them and get 4!!! Lol
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